CVE-2026-23169
High
Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race in mptcp_pm_nl_flush_addrs_doit() syzbot and Eulgyu Kim reported crashes in mptcp_pm_nl_get_local_id() and/or mptcp_pm_nl_is_backup() Root cause is list_splice_init() in mptcp_pm_nl_flush_addrs_doit() which is not RCU ready. list_splice_init_rcu() can not be called here while holding pernet->lock spinlock. Many thanks to Eulgyu Kim for providing a repro and testing our patches.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedFeb 14, 2026
First seenFeb 14, 2026
How to fix
Update
- linux linux_kernel5.15.201, 6.1.164, 6.6.125, 6.12.72, 6.18.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.11 ≤ v < 5.15.201, 5.16 ≤ v < 6.1.164, 6.2 ≤ v < 6.6.125, 6.7 ≤ v < 6.12.72, 6.13 ≤ v < 6.18.9, 6.19 | 5.15.201, 6.1.164, 6.6.125, 6.12.72, 6.18.9 |
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